2166655602 has 8 divisors (see below), whose sum is σ = 4333311216. Its totient is φ = 722218532.

The previous prime is 2166655571. The next prime is 2166655649. The reversal of 2166655602 is 2065566612.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

2166655602 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180554628 + ... + 180554639.

It is an arithmetic number, because the mean of its divisors is an integer number (541663902).

Almost surely, 2^2166655602 is an apocalyptic number.

2166655602 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2166655602 is a wasteful number, since it uses less digits than its factorization.

2166655602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361109272.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 2166655602 is about 46547.3479588258. The cubic root of 2166655602 is about 1293.9871434040.

The spelling of 2166655602 in words is "two billion, one hundred sixty-six million, six hundred fifty-five thousand, six hundred two".